Tesis sobre el tema "Manganese TWIP/TRIP Steels"
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Saeed-Akbari, Alireza [Verfasser]. "Mechanism Maps, Mechanical Properties, and Flow Behavior in High-Manganese TRIP/TWIP and TWIP Steels / Alireza Saeed-Akbari". Aachen : Shaker, 2011. http://d-nb.info/107408795X/34.
Texto completoMendonça, Roberto Ramon. "Soldagem por fricção e mistura mecânica de aço austenítico alto manganês com efeito TRIP". Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-14102014-082116/.
Texto completoThe development and application of new light materials with superior mechanical properties is extremely important to weight reduction in vehicles and consequently reduction of greenhouse gases emission. The Fe-Mn-C steels with high Mn (20-30%) are a recent development of austenitic steels, which, due to their different mechanisms of deformation, possesses high strength and high ductility as well. In addition, this new type of structural steel allows an effective reduction of manufacturing costs due to its reduced processing time (it does not require special heat treatments and controlled thermo mechanical processing). Welding has been one of the most important processes for joining metals. Among the available welding processes, friction stir welding (FSW) is notable for being a solid state process with great advantages over the conventional welding methods. In the mettalurgical point of view, welding dissimilar materials is a significant advantage of FSW over the other process. The main reason is the reduction of mixture of material and phase transformations between the incompatible materials in the weld. Moreover, grain refinement is another advantage from the process. The present study aimed to produce laboratorial scale high Mn steels with TRIP effect, investigate the impact of tool speed ont the microstructure and mechanical properties of friction stir welded joints. The microstructure of the welded joints exhibited only the stirred zone (SZ) and the base material (BM), besides the presence of ´onion rings´ within the stirred zone. The SZ exhibited no signs of martensite suggesting that dynamic recrystallization have occurred for all the speed tested. Moreover, the grains in the SZ had equiaxial morphology and were significantly refined. The fracture of the tensile specimens occurred in the base material, bringing to light that the welding process was beneficial to the mechanical properties. Furthermore, the variation of heat input achieved with the speed did not compromise the quality of welded joints.
Chen, Zhenglin. "Modeling of Microstructure Evolution Induced by Surface Mechanical Attrition Treatment in TWIP/TRIP Steels". Thesis, Troyes, 2020. http://www.theses.fr/2020TROY0017.
Texto completoThis work focuses on modeling the microstructure evolution induced by SMAT in TWIP and/or TRIP steels. The features of the generated gradient microstructure of a 304L TWIP/TRIP steel are characterized by SEM, XRD, and nanoindentation. Nanoindentation is applied on different layers for the investigation of the mechanical properties of the gradient microstructure. Based on the experimental results, a dislocation density model considering the influence of twinning and martensitic transformation of TWIP/TRIP steel is proposed to investigate the effect of SMAT controlling parameters. Then the dislocation density of the austenite and that of the martensite as well as the volume fraction of twinning and martensitic transformation during impact loading is numerically evaluated using a full finite element model. Afterwards, to study the evolution of the damage during the SMAT process, the damage was introduced in the dislocation density model. Finally, a dislocation density based visco-elastoplastic model considering the effect of grain size, dislocation density, twin, and strain rate was proposed to further understand the effect of impact loadings on the mechanical properties of TWIP/TRIP steel with gradient microstructure based on the results of nanoindentation tests. Then to study the overall elastoplastic response of the SMATed material, the rule of mixtures is used by considering the gradient material as a gradient structure consisting of different layers with distinct microstructures and mechanical properties
Bouet, Michael P. "The effect of molybdenum in silicon-manganese-niobium TRIP steels". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0035/MQ64212.pdf.
Texto completoBouet, Michael P. "The effect of molybdenum in silicon-manganese-niobium TRIP steels /". Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30236.
Texto completoIn the current TRIP grades, Si is a key elemental addition. However, in levels exceeding 1.0 wt.%, it is unpopular as it is responsible for a tenacious oxide layer. In this work, it is suggested that Mo may potentially replace Si in part.
Multi pass rolling simulations were also performed using torsion. (Abstract shortened by UMI.)
Wang, Meimei Verfasser], Dierk [Akademischer Betreuer] [Raabe y Wolfgang [Akademischer Betreuer] Bleck. "Nanolaminate TRIP-TWIP martensitic matrix steels : design and characterization / Meimei Wang ; Dierk Raabe, Wolfgang Bleck". Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1130589994/34.
Texto completoWang, Meimei [Verfasser], Dierk [Akademischer Betreuer] Raabe y Wolfgang [Akademischer Betreuer] Bleck. "Nanolaminate TRIP-TWIP martensitic matrix steels : design and characterization / Meimei Wang ; Dierk Raabe, Wolfgang Bleck". Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1130589994/34.
Texto completoGuo, Xiaofei [Verfasser]. "Influences of Microstructure, Alloying Elements and Forming Parameters on Delayed Fracture in TRIP/TWIP-Aided Austenitic Steels / Xiaofei Guo". Aachen : Shaker, 2012. http://d-nb.info/1066197296/34.
Texto completoMosecker, Linda Verfasser], Wolfgang [Akademischer Betreuer] [Bleck y Joachim [Akademischer Betreuer] Mayer. "Materials design of high nitrogen manganese austenitic stainless TWIP steels for strip casting / Linda Mosecker ; Wolfgang Bleck, Joachim Mayer". Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1126040770/34.
Texto completoMosecker, Linda [Verfasser], Wolfgang [Akademischer Betreuer] Bleck y Joachim [Akademischer Betreuer] Mayer. "Materials design of high nitrogen manganese austenitic stainless TWIP steels for strip casting / Linda Mosecker ; Wolfgang Bleck, Joachim Mayer". Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1126040770/34.
Texto completoHaase, Christian [Verfasser], Dmitri A. [Akademischer Betreuer] Molodov y Wolfgang [Akademischer Betreuer] Bleck. "Texture and microstructure evolution during deformation and annealing of high-manganese TWIP steels / Christian Haase ; Dmitri A. Molodov, Wolfgang Bleck". Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130590003/34.
Texto completoThorning, Casper. "Grain Boundary Ridge Formation during High Temperature Oxiditation of Manganese Containing Steels". Doctoral thesis, KTH, Materialvetenskap, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4778.
Texto completoJäpel, Tom Verfasser], Stefan [Akademischer Betreuer] Zaefferer, Dierk [Akademischer Betreuer] [Raabe y Joachim [Akademischer Betreuer] Mayer. "Feasibility study on local elastic strain measurements with an ebsd pattern cross correlation method in elastic-plastically deforming materials : applications on high manganese TWIP steels / Tom Jäpel ; Stefan Zaefferer, Dierk Raabe, Joachim Mayer". Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1129180786/34.
Texto completoJäpel, Tom [Verfasser], Stefan Akademischer Betreuer] Zaefferer, Dierk [Akademischer Betreuer] [Raabe y Joachim [Akademischer Betreuer] Mayer. "Feasibility study on local elastic strain measurements with an ebsd pattern cross correlation method in elastic-plastically deforming materials : applications on high manganese TWIP steels / Tom Jäpel ; Stefan Zaefferer, Dierk Raabe, Joachim Mayer". Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1129180786/34.
Texto completoKalsar, Rajib. "Evolution of Microstructure and Texture in Manganese Steels". Thesis, 2017. http://etd.iisc.ac.in/handle/2005/4244.
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